Gruntfile: use human-readable numbers for `grunt rsync`
Fix typo in ‘Introduction to IndexedDB’ article

Thanks to @hemanth for spotting and reporting this!
Convert ‘Re-introducing `<video>`’ to Markdown
Add a missing word in "(Re-)Introducing "<video>"
Convert ‘Re-introducing `<video>`’ to Markdown
Confict merged
Merge branch 'foolip-patch-1'